Dishwasher and spray head therefor

Abstract

The utility model discloses a kind of dish washer and its spray head, the spray head includes hollow shell, at least one spray hole is provided on the shell wall of the shell, cavity is formed in the shell;The spray head is communicated with water delivery pipeline by connecting piece;The water delivery pipeline can deliver liquid into the cavity, under the hydraulic action in the cavity, the spray head and the water delivery pipeline can directly or indirectly cooperate to form sealing mechanism, and when the liquid is sprayed out through the spray hole, it can drive the spray head relative to the water delivery pipeline rotation.The spray head of the dish washer provided in the utility model embodiment, overall structure is simple and compact, and sealing is good when using, can reliably guarantee spray pressure, to effectively improve cleaning effect.

Description

Technical Field

[0001] This utility model relates to the technical field of tableware cleaning equipment, and in particular to a dishwasher and its nozzle. Background Technology

[0002] A dishwasher is a device used to automatically clean dishes. Because washing dishes with a dishwasher greatly reduces tedious manual labor, is easy to operate, and has a high degree of automation, it has become increasingly popular among consumers.

[0003] Existing dishwashers typically include at least one spray system and a dish rack for placing dishes to be washed. During washing, the user places the dishes in the dish rack, starts the dishwasher, and the spray system sprays water to rinse the dishes in the dish rack.

[0004] Existing spraying mechanisms mainly include two types: The first type is a conventional spray arm set under the dish rack. This conventional spray arm is relatively long and has multiple spray holes. When working, by rotating the entire spray arm, several water jets are sprayed from the spray holes to rinse all the dishes in the dish rack, thus achieving the regular cleaning function of the dishes; The second type is a high-intensity spray arm used to clean dishes in the dish rack that require local cleaning or intensive cleaning.

[0005] Currently, existing high-intensity wash spray arms are designed with rotating nozzles to increase the cleaning coverage area. However, the inventors of this application have further discovered that the aforementioned spray arms with rotating nozzles have the following problems: complex overall structure, large water leakage during use, and insufficient spray pressure, resulting in unreliable cleaning effect.

[0006] Therefore, it is necessary to propose a dishwasher that solves at least one of the above problems.

[0007] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this application and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this application. Utility Model Content

[0008] The purpose of this invention is to provide a dishwasher and its nozzle, which has a simple and compact overall structure and excellent sealing performance during use, thus reliably ensuring spray pressure and effectively improving the cleaning effect.

[0009] The specific technical solution of this utility model embodiment is as follows:

[0010] A dishwasher nozzle includes: a hollow housing with at least one spray hole on the housing wall and a cavity formed inside the housing; the nozzle is connected to a water supply pipe via a connector; the water supply pipe can deliver liquid into the cavity; under hydraulic pressure within the cavity, the nozzle and the water supply pipe can directly or indirectly cooperate to form a sealing mechanism; and when the liquid is sprayed out through the spray hole, it can drive the nozzle to rotate relative to the water supply pipe.

[0011] In a preferred embodiment, the connector is mounted on or integrally formed with the water supply pipe, and the connector has a water channel inside for communicating the water supply pipe with the cavity.

[0012] In a preferred embodiment, the nozzle further includes a gasket, and the nozzle and the connector are fitted together by the gasket to form the sealing mechanism.

[0013] In a preferred embodiment, the connector has a shaft segment serving as the rotation center of the nozzle, the nozzle being sleeved around the shaft segment, and the gasket being disposed around the shaft segment and located inside the nozzle or between the shaft segment and the nozzle.

[0014] In a preferred embodiment, when the nozzle rotates relative to the connector, one end face of the gasket is sealed to the nozzle.

[0015] In a preferred embodiment, the gasket is detachably mounted on the connector or fixedly mounted on the connector, or the gasket is integrally formed with the connector.

[0016] In a preferred embodiment, a limiting member is provided on the shaft segment for limiting the gasket in the axial direction along the shaft segment.

[0017] In a preferred embodiment, the limiting member is an elastic retaining ring.

[0018] In a preferred embodiment, the gasket is made of any one of the following: polytetrafluoroethylene, polyoxymethylene, or ceramic.

[0019] In a preferred embodiment, the nozzle and the connector directly cooperate to form the sealing mechanism. The nozzle includes a first mating part, and the connector includes a second mating part. Under the hydraulic action within the cavity, the first mating part and the second mating part abut against each other in the water flow direction and form an end face seal.

[0020] In a preferred embodiment, at least one of the materials of the first mating part and the second mating part includes any one of the following: polytetrafluoroethylene, polyoxymethylene, and ceramic.

[0021] In a preferred embodiment, the connector has a shaft segment serving as the rotation center of the nozzle, the nozzle being sleeved around the shaft segment, a first mating part being disposed on the inner surface of the nozzle, and a second mating part being disposed on the outer surface of the shaft segment; or, the nozzle is inserted into the shaft segment, the first mating part being disposed on the outer surface of the nozzle, and the second mating part being disposed on the inner surface of the shaft segment.

[0022] In a preferred embodiment, the housing has a top wall facing away from the connector, side walls surrounding the top wall, and a bottom wall for engaging with the connector, the nozzle being disposed on the top wall and / or the side walls.

[0023] In a preferred embodiment, the spray holes include a first group of spray holes disposed on the top wall. The first group of spray holes includes at least a first spray hole and a second spray hole. The first spray hole and the second spray hole are circumferentially distributed on the top wall, and the axes of the first spray hole and the second spray hole are not perpendicular to the axis of the top wall.

[0024] In a preferred embodiment, the nozzle includes a second nozzle group disposed on the sidewall, the second nozzle group including at least a third nozzle and a fourth nozzle, the third nozzle and the fourth nozzle being circumferentially distributed on the sidewall, and the axes of the third nozzle and the fourth nozzle not coinciding with the radial direction of the nozzle.

[0025] A dishwasher comprising the nozzle of any of the dishwashers described above.

[0026] The technical solution of this utility model has the following significant beneficial effects:

[0027] The dishwasher nozzle provided in this embodiment is connected to a water supply pipe via a connector. Under hydraulic pressure within the nozzle housing, the nozzle and the water supply pipe can directly or indirectly cooperate to form a sealing mechanism. When liquid is sprayed through the nozzle, the nozzle rotates relative to the water supply pipe. This cleverly utilizes hydraulic force to achieve a dynamic end-face seal between the nozzle and the water supply pipe. During operation, when the water pressure is low, the hydraulically driven force meets basic sealing requirements. As the water pressure increases, the hydraulic pressure further pushes the nozzle closer together, increasing the contact pressure of the sealing surface and further enhancing the seal. This achieves adaptive sealing under different water pressure conditions, ensuring no liquid leakage under all operating conditions and reliably guaranteeing spray pressure, thereby effectively improving cleaning performance (cleaning effect and efficiency). Furthermore, it can shorten cleaning time, save water and electricity, improve performance in multiple ways, and enhance the user experience.

[0028] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, embodiments of the present invention include many changes, modifications, and equivalents. Features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. Attached Figure Description

[0029] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0030] Figure 1 This is a schematic diagram of the structure of a dishwasher nozzle installed on a water supply pipe according to an embodiment of this application;

[0031] Figure 2 for Figure 1 Sectional view at point AA;

[0032] Figure 3 This is a schematic diagram of the structure of a dishwasher nozzle provided in an embodiment of this application;

[0033] Figure 4An exploded view of the nozzle of a dishwasher provided in the embodiments of this application;

[0034] Figure 5 This is a front view of the nozzle of a dishwasher provided in an embodiment of this application;

[0035] Figure 6 for Figure 5 A cross-sectional view at point BB;

[0036] Figure 7 for Figure 6 A diagram showing the nozzle in use;

[0037] Figure 8 for Figure 5 Another cross-sectional view at point BB.

[0038] Reference numerals in the figures of this application:

[0039] 1. Spray nozzle;

[0040] 10. Spray nozzle;

[0041] 101. First nozzle;

[0042] 102. Second nozzle;

[0043] 103. Third nozzle;

[0044] 104. Fourth nozzle;

[0045] 11. Shell;

[0046] 2. Connecting parts;

[0047] 21. Shaft segment;

[0048] 3. Water supply pipelines;

[0049] 4. Gaskets;

[0050] 5. Limiting components;

[0051] 61. First Coordination Department;

[0052] 62. Second Coordination Department. Detailed Implementation

[0053] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate this utility model and are not intended to limit the scope of this utility model. After reading this utility model, any modifications of this utility model in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0054] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0056] This utility model provides a dishwasher and its nozzle, which has a simple and compact overall structure and good sealing performance during use, which can reliably ensure the spray pressure, thereby effectively improving the cleaning effect.

[0057] Please refer to the following for comprehensive information. Figures 1 to 8 This application specification provides a dishwasher nozzle 1, which may include a hollow housing 11. At least one spray hole 10 is provided on the shell wall of the housing 11, and a cavity is formed inside the housing 11. The nozzle 1 is connected to a water supply pipe 3 through a connector 2. The water supply pipe 3 can deliver liquid into the cavity. Under the hydraulic action inside the cavity, the nozzle 1 and the water supply pipe 3 can directly or indirectly cooperate to form a sealing mechanism, and when the liquid is sprayed out through the spray hole 10, it can drive the nozzle 1 to rotate relative to the water supply pipe 3.

[0058] In this embodiment, the nozzle 1 may include a hollow housing 11, with spray holes 10 provided on the shell wall of the housing 11. The housing 11 is rotatably connected to the connector 2, and the housing 11 is connected to the water supply pipe 3 through the connector 2. The water supply pipe 3 can deliver liquid into the cavity of the housing 11, and when the liquid is sprayed out through the spray holes 10, it can drive the nozzle 1 to rotate relative to the water supply pipe 3.

[0059] In this embodiment, the housing 11 can be a one-piece structure or a separate structure. For example, when the housing 11 is separate, it can be divided into two parts, where the first part is used to house the spray nozzle 10, and the second part is used to rotatably engage with the connector 2. The first part and the second part are detachably and sealingly connected. Of course, the housing 11 can also be configured in other ways, and this application does not impose any specific limitations on it.

[0060] In one embodiment, the housing 11 has a top wall facing away from the connector 2, side walls surrounding the top wall, and a bottom wall for engaging with the connector 2, and the nozzle 10 is disposed on the top wall and / or the side walls.

[0061] In this embodiment, the housing 11 may include a top wall, a side wall, and a bottom wall. The spray hole 10 may be provided on at least one of the top wall and the side wall, and the bottom wall may be provided with a mounting port for cooperating with the connector 2.

[0062] Overall, the housing 11, through the cooperation of the top wall, side wall and bottom wall, forms a closed structure except for the spray hole 10 and the mounting port. In use, the housing 11 can directly or indirectly cooperate with the water supply pipe 3 to form a sealing mechanism. Compared with the existing nozzle 1 structure with large gaps at the top and bottom, it can help ensure that when the cavity of the housing 11 contains pressurized liquid, a relatively sealed cavity can be formed inside the housing 11, ensuring the sealing performance of the nozzle 1 during use, thereby reliably ensuring the spray pressure and effectively improving the cleaning effect.

[0063] The main function of the nozzle 10 is to provide rotational power for the nozzle 1 using the liquid flow ejected from the nozzle 10. Specifically, the liquid has a certain force when it is ejected from the nozzle 10. When the liquid is ejected, it generates a reaction force on the nozzle 1. The direction of this force is opposite to the direction of the liquid flow. The reaction force of the liquid flow will generate a rotational torque on the nozzle 1, thereby causing the nozzle 1 to rotate around its axis.

[0064] Specifically, the nozzle 10 is disposed on the top wall and / or the side wall. For example, the nozzle 10 may be disposed on the top wall, or on the side wall, or on both the top wall and the side wall.

[0065] Please see Figure 3 In one embodiment, the nozzle 10 may include a first nozzle group disposed on the top wall. The first nozzle group includes at least a first nozzle 101 and a second nozzle 102. The first nozzle 101 and the second nozzle 102 are circumferentially distributed on the top wall, and the axes of the first nozzle 101 and the second nozzle 102 are not perpendicular to the axis of the top wall.

[0066] In this embodiment, taking the provision of spray holes 10 on the top wall as an example, the number of spray holes 10 can be multiple, forming a first spray hole group. For example, the first spray hole group can include a first spray hole 101 and a second spray hole 102, which can be symmetrically arranged on the top wall at a central angle of 180°. When at least two spray holes 10 are circumferentially symmetrically distributed, a continuous water flow can be formed within a 360° range to cover the dishes and / or kitchen utensils being washed during rotation, while also ensuring the stability of the spray head 1's rotation.

[0067] Furthermore, the axis of each nozzle 10 is not perpendicular to the axis of the top wall, thereby ensuring that the reaction force of the liquid flow from the nozzle 10 generates a rotational torque on the nozzle 1, thereby driving the nozzle 1 to rotate around its axis.

[0068] Please refer to the following: Figure 5 In one embodiment, the nozzle 10 may include a second nozzle group disposed on the side wall, the second nozzle group including at least a third nozzle 103 and a fourth nozzle 104, the third nozzle 103 and the fourth nozzle 104 being circumferentially distributed on the side wall, and the axes of the third nozzle 103 and the fourth nozzle 104 not coinciding with the radial direction of the nozzle 1.

[0069] In this embodiment, similar to the spray holes 10 provided on the top wall, the number of spray holes 10 on the side wall can be multiple, forming a second spray hole group. For example, the second spray hole group can include a third spray hole 103 and a fourth spray hole 104, which can be symmetrically arranged on the side wall at 180° central angle intervals. Since the axes of the third spray hole 103 and the fourth spray hole 104 do not coincide with the radial direction of the nozzle 1, the water flow generated when it is sprayed from the third spray hole 103 and the fourth spray hole 104 can generate a force perpendicular to the radial direction, thereby creating a rotational torque on the nozzle 1. When at least two spray holes 10 are circumferentially symmetrically distributed, a continuous water flow can be formed within a 360° range to cover the dishes and / or kitchen utensils being washed during rotation, while also ensuring the stability of the nozzle 1's rotation.

[0070] In one specific implementation, when spray holes 10 are provided on both the top wall and the side wall, they have the advantages of being provided on the top wall and the side wall respectively. At the same time, the two work together to further enhance the rotational power, expand the cleaning dimensions, and improve the cleaning effect.

[0071] like Figure 2As shown, in this embodiment, the nozzle 1 can be connected to the water supply pipe 3 via the connector 2. The connector 2 can be installed on the water supply pipe 3, or it can be integrally formed with the water supply pipe 3. The connector 2 has a water channel formed inside for communicating the water supply pipe 3 with the cavity.

[0072] Taking the installation of connector 2 on the water supply pipe 3 as an example, connector 2 and water supply pipe 3 can be separately installed; connector 2 can be installed on water supply pipe 3 in a detachable manner, or it can be installed on water supply pipe 3 in a non-detachable manner. Taking the detachable installation of connector 2 on water supply pipe 3 as an example, connector 2 can be provided with a snap-fit ​​part adapted to the cross-section of water supply pipe 3, and the snap-fit ​​part is used to snap onto water supply pipe 3 to realize the installation of connector 2. Of course, the specific cooperation form between connector 2 and water supply pipe 3 is not limited to the above examples, and this application does not make specific limitations here.

[0073] A water channel is formed inside the connector 2. One end of the water channel can be connected to the water supply pipe 3, and the other end can be connected to the cavity of the nozzle 1. When the water supply pipe 3 supplies liquid to the cavity, the liquid in the water supply pipe 3 flows into the cavity of the nozzle 1 through the water channel of the connector 2. In use, under the hydraulic action within the cavity, the nozzle 1 and the water supply pipe 3 can directly or indirectly cooperate to form a sealing mechanism.

[0074] Please refer to the following: Figure 4 , Figure 5 , Figure 6 and Figure 7 For example, the nozzle 1 and the water supply pipe 3 can indirectly cooperate to form a sealing mechanism.

[0075] In one embodiment, the nozzle 1 may further include a gasket 4, and the nozzle 1 and the connector 2 are connected by the gasket 4 to form the sealing mechanism.

[0076] In this embodiment, a gasket 4 may be provided inside the nozzle 1. Under the action of pressurized fluid, the gasket 4 can tightly fit the sealing surface of the connector 2 and the nozzle 1 at its end face (e.g., Figure 7 As shown in the figure, this ensures the sealing between the nozzle 1 and the connector 2, overcoming the problem of insufficient spray pressure caused by large leakage in the prior art, which makes it impossible to reliably guarantee the cleaning effect.

[0077] In one embodiment, the connector 2 has a shaft segment 21 serving as the rotation center of the nozzle 1, the nozzle 1 being sleeved around the shaft segment 21, and the gasket 4 being disposed around the shaft segment 21 and located inside the nozzle 1 or between the shaft segment 21 and the nozzle 1.

[0078] In this embodiment, the connector 2 has a shaft segment 21 serving as the rotation center of the nozzle 1, and this shaft segment 21 can be a hollow cylinder. A mounting port is provided on the bottom wall of the nozzle 1, through which it can be fitted onto the outer periphery of the shaft segment 21. The mounting port of the nozzle 1 and the shaft segment 21 can be in clearance fit. Specifically, the size of this clearance is not specifically limited in this application, but in principle, the clearance should be as small as possible without affecting the rotation of the nozzle 1.

[0079] The gasket 4 can be an annular gasket 4 with a certain thickness, and the inner side of the gasket 4 can be adapted to the outer contour of the shaft segment 21. Specifically, the inner diameter of the gasket 4 can be close to the outer diameter of the shaft segment 21, for example, the inner diameter of the gasket 4 can be slightly larger than the outer diameter of the shaft segment 21. The outer contour dimensions of the gasket 4 can vary depending on its installation position and mating relationship. For example, the outer surface of the gasket 4 can be located only inside the housing 11 of the nozzle 1, that is, it does not directly contact the housing 11 of the nozzle 1, and the gasket 4 is located inside the housing 11. Alternatively, the outer surface of the gasket 4 can directly contact the housing 11 of the nozzle 1. In this case, the gasket 4 can be disposed between the shaft segment 21 and the nozzle 1.

[0080] In one embodiment, when the nozzle 1 rotates relative to the connector 2, one end face of the gasket 4 is sealed to the nozzle 1.

[0081] In this embodiment, when the nozzle 1 rotates relative to the connector 2, one end face of the gasket 4 forms an end face seal with the nozzle 1. The formed end face seal can effectively reduce the dynamic leakage rate of the fluid. In addition, since the end face contact area is large, the contact pressure is uniform, and the sealing reliability is high. Moreover, the gasket 4 wears uniformly and has a longer service life, which can reduce the user's maintenance costs.

[0082] In one embodiment, the gasket 4 is detachably mounted on the connector 2 or fixedly mounted on the connector 2, or the gasket 4 is integrally formed with the connector 2.

[0083] In this embodiment, the specific installation method of the gasket 4 can include various forms. For example, the gasket 4 can be detachably installed on the connector 2, which facilitates subsequent individual replacement of the gasket 4, resulting in low maintenance costs and convenient operation. Alternatively, the gasket 4 can also be fixedly installed on the connector 2. When the gasket 4 and the connector 2 are separate, the gasket 4 can be made of a different material than the connector 2, such as a material with a low coefficient of friction, which helps to reduce the friction generated when the nozzle 1 rotates. Alternatively, the gasket 4 can be integrally formed with the connector 2, which reduces the number of parts and eliminates the assembly process of the gasket 4.

[0084] In one embodiment, a limiting member 5 is provided on the shaft segment 21, the limiting member 5 being used to limit the gasket 4 in the axial direction along the shaft segment 21.

[0085] In this embodiment, when the dishwasher is operating, the nozzle 1 may move axially relative to the shaft segment 21 under the action of fluid hydraulic pressure. In order to axially limit the gasket 4, a limiting member 5 can be provided on the shaft segment 21. Specifically, the number of limiting members 5 can be one or two, depending on the relative fit between the gasket 4, the shaft segment 21, and the nozzle 1 housing 11.

[0086] Specifically, the limiting member 5 can be an elastic retaining ring. When the limiting member 5 is an elastic retaining ring, a groove can be provided on the outer wall of the shaft segment 21 on the side opposite to the water supply pipe 3, and the elastic retaining ring can be installed on the periphery of the shaft segment 21 through the groove. The elastic retaining ring itself has a certain degree of elasticity, which can adapt to the slight dimensional deviations of the shaft segment 21, improve the compatibility of the parts, and reduce the manufacturing precision requirements of the connector 2.

[0087] like Figure 6 As shown, when the nozzle 1 is not in use, the fluid in the water supply pipe 3 is not supplied into the nozzle 1. At this time, the elastic retaining ring and the gasket 4 can be clearance-fitted along the axial direction of the shaft section 21.

[0088] like Figure 7 As shown, when the nozzle 1 is in use, fluid from the water supply pipe 3 is supplied into the nozzle 1. Under hydraulic pressure, the nozzle 1 moves axially, and the gasket 4 contacts the elastic retaining ring. With the limiting effect of the elastic retaining ring and the cooperation of water pressure, the gasket 4 can tightly abut against the inner wall of the nozzle 1, achieving a sealing fit at the contact point. Specifically, the gasket 4 and the inner wall of the nozzle 1 can achieve a surface seal at the contact point.

[0089] During dishwasher operation, the water pressure in the water supply pipe 3 fluctuates depending on the operating conditions, such as the start and stop of the water pump and the switching of washing programs. When the water pressure is low, the hydraulically driven resistance can meet the basic sealing requirements; when the water pressure increases (such as in high-intensity cleaning mode), the hydraulic pressure further pushes the housing 11 of the nozzle 1, the gasket 4, and the elastic retaining ring to tightly abut against each other along the axial direction of the shaft section 21, and the contact pressure of the sealing surface increases simultaneously. By cleverly utilizing hydraulic pressure, adaptive sealing is achieved for different water pressure conditions, ensuring no liquid leakage under all operating conditions.

[0090] In one embodiment, the material of the gasket 4 may include any one of the following: polytetrafluoroethylene, polyoxymethylene, or ceramic.

[0091] In this embodiment, the gasket 4 can be made of a material with a low coefficient of surface friction, thereby reducing the frictional resistance that the nozzle 1 needs to overcome when rotating. Specifically, in the dishwasher field, the gasket 4 can be any one of polytetrafluoroethylene, polyoxymethylene, or ceramic. Of course, the specific material of the gasket 4 is not limited to the examples mentioned above. Those skilled in the art may make other modifications based on the technical essence of this application, but as long as the function and effect achieved are the same as or similar to those of this application, they should be covered within the scope of protection of this application.

[0092] In this embodiment, taking polytetrafluoroethylene (PTFE) as an example, the PTFE gasket 4 has an extremely low surface friction coefficient and self-lubricating properties. During the rotation of the nozzle 1, it can ensure a tight fit of the sealing surface, better control the dynamic sealing leakage rate, and avoid rotational jamming caused by excessive friction. In addition, the low friction characteristics of PTFE significantly reduce the driving force required for the rotation of the nozzle 1. Under the same water pressure, the rotational speed of the nozzle 1 can be significantly increased, thereby expanding the water flow coverage area. At the same time, the low friction generates less heat, ensuring the long-term stable operation of the nozzle 1.

[0093] The polytetrafluoroethylene (PTFE) has a certain degree of elasticity. When the PTFE gasket 4 mates with the inner wall of the nozzle 1, it can compensate for dimensional fluctuations caused by assembly tolerances and temperature changes between the nozzle 1 and the connector 2. Even after long-term use, the gasket 4 can still maintain uniform contact of the sealing surface, solving the problem of localized gap leakage caused by rigid contact.

[0094] PTFE gasket 4 exhibits excellent chemical resistance. Detergents and food residues used in dishwashers are unlikely to cause PTFE to swell or degrade. PTFE maintains stable performance within a temperature range of -20℃ to 260℃, fully covering the operating temperature of dishwashers. Overall, PTFE gasket 4 offers high reliability and a long service life.

[0095] In summary, the PTFE gasket 4 has excellent comprehensive properties such as reliable sealing, strong chemical corrosion resistance, long service life, and low coefficient of friction, which can better meet the sealing and rotation requirements of the dishwasher nozzle 1.

[0096] In one embodiment, the nozzle 1 and the connector 2 are directly fitted together to form the sealing mechanism. The nozzle 1 includes a first mating part 61, and the connector 2 includes a second mating part 62. Under the hydraulic action in the cavity, the first mating part 61 and the second mating part 62 abut against each other in the water flow direction and form an end face seal.

[0097] In this embodiment, the nozzle 1 and the connector 2 can be directly fitted together to form a sealing mechanism, which further simplifies the structure and improves the compactness of the structure.

[0098] During dishwasher operation, the water pressure in the water supply pipe 3 fluctuates depending on the operating conditions, such as the start and stop of the water pump and the switching of washing programs. When the water pressure is low, the hydraulically driven resistance can meet the basic sealing requirements; when the water pressure increases (such as in high-intensity washing mode), the hydraulic pressure further pushes the first mating part 61 and the second mating part 62 to press tightly against each other, and the contact pressure of the sealing surface increases simultaneously. By cleverly utilizing hydraulic pressure, adaptive sealing is achieved for different water pressure conditions, ensuring no liquid leakage under all operating conditions, and fundamentally solving the problem that traditional sealing structures are more prone to leakage under high pressure.

[0099] like Figure 8 As shown, in one specific embodiment, the connector 2 has a shaft segment 21 serving as the rotation center of the nozzle 1. The nozzle 1 is sleeved around the shaft segment 21, the first mating part 61 is disposed on the inner surface of the nozzle 1, and the second mating part 62 is disposed on the outer surface of the shaft segment 21. Alternatively, in another specific embodiment, the nozzle 1 passes through the shaft segment 21, the first mating part 61 is disposed on the outer surface of the nozzle 1, and the second mating part 62 is disposed on the inner surface of the shaft segment 21.

[0100] With this Figure 8 For example, the first mating part 61 can be the inner surface of the bottom surface of the nozzle 1, and the second mating part 62 can be an annular protrusion provided on the outer side of the shaft segment 21, and the two can fit tightly together under hydraulic action. Of course, the specific forms of the first mating part 61 and the second mating part 62 are not limited to the examples above, and this application does not make specific limitations here.

[0101] The material of at least one of the first mating part 61 and the second mating part 62 may include any one of the following: polytetrafluoroethylene, polyoxymethylene, or ceramic.

[0102] In this embodiment, at least one of the materials of the first mating part 61 and the second mating part 62 can be polytetrafluoroethylene, polyoxymethylene, or ceramic. The technical effects produced by these materials can be referred to the description of the gasket 4 material above, and will not be repeated here.

[0103] In the overall embodiment of the application, the dishwasher's nozzle 1 is connected to the water supply pipe 3 via a connector 2. Under the hydraulic action within the nozzle 1's housing 11, the nozzle 1 and the water supply pipe 3 can directly or indirectly cooperate to form a sealing mechanism. Furthermore, when liquid is sprayed through the nozzle 10, it drives the nozzle 1 to rotate relative to the water supply pipe 3. This cleverly utilizes the hydraulic force to achieve a dynamic end-face seal between the nozzle 1 and the water supply pipe 3. During operation, when the water pressure is low, the hydraulically driven force meets the basic sealing requirements. When the water pressure increases, the hydraulic pressure further pushes the nozzle 1 to press tightly against the water supply pipe, and the contact pressure of the sealing surface increases simultaneously, further improving the sealing performance. This achieves adaptive sealing under different water pressure conditions, ensuring no liquid leakage under all operating conditions and reliably guaranteeing the spray pressure, thereby effectively improving the cleaning effect (cleaning effect and cleaning efficiency). In addition, it can shorten cleaning time, save water and electricity, improve performance in multiple ways, and enhance the user experience.

[0104] This application also provides a dishwasher, which includes the above-mentioned nozzle 1. By setting the nozzle 1, the dishwasher can achieve the technical effects achieved by the nozzle 1 embodiment. For details, please refer to the specific description of the above embodiment, which will not be repeated here.

[0105] It should be noted that in the description of this application, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more.

[0106] The various embodiments described in this specification are presented in a progressive manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0107] The above are merely several embodiments of this utility model. Although the embodiments disclosed in this utility model are as described above, the content is only for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any person skilled in the art to which this utility model pertains may make any modifications and changes in the form and details of the embodiments without departing from the spirit and scope disclosed in this utility model. However, the patent protection scope of this utility model shall still be determined by the scope defined in the appended claims.

Claims

1. A dishwasher nozzle, characterized in that, The nozzle includes a hollow shell, and at least one spray hole is provided on the shell wall of the shell, and a cavity is formed inside the shell; The nozzle is connected to the water supply pipeline via a connector; The water supply pipe is capable of delivering liquid into the cavity; The nozzle also includes a gasket, the connector has a shaft segment serving as the rotation center of the nozzle, the nozzle is sleeved around the shaft segment, the gasket is disposed around the shaft segment, and a limiting member is provided on the shaft segment for limiting the gasket along the axial direction of the shaft segment; Under the hydraulic pressure within the cavity, the nozzle and the connector form a sealing mechanism through the gasket, and when the liquid is ejected through the nozzle hole, the nozzle can rotate relative to the water supply pipe.

2. The nozzle of the dishwasher as described in claim 1, characterized in that, The connector is installed on the water supply pipe or integrally formed with the water supply pipe, and a water channel is formed inside the connector for communicating the water supply pipe with the cavity.

3. The dishwasher nozzle as described in claim 2, characterized in that, The gasket is located inside the nozzle or between the shaft section and the nozzle.

4. The dishwasher nozzle as described in claim 3, characterized in that, When the nozzle rotates relative to the connector, one end face of the gasket is sealed to the nozzle.

5. The dishwasher nozzle as described in claim 4, characterized in that, The gasket is installed on the connector in a detachable manner or in a fixed manner, or the gasket is integrally formed with the connector.

6. The nozzle of the dishwasher as described in claim 5, characterized in that, The limiting component is an elastic retaining ring.

7. The nozzle of the dishwasher as described in claim 1, characterized in that, The gasket is made of any one of the following materials: polytetrafluoroethylene, polyoxymethylene, or ceramic.

8. The nozzle of the dishwasher as described in claim 1, characterized in that, The housing has a top wall facing away from the connector, side walls surrounding the top wall, and a bottom wall for engaging with the connector, with the nozzle disposed on the top wall and / or the side walls.

9. The nozzle of the dishwasher as described in claim 8, characterized in that, The spray holes include a first group of spray holes disposed on the top wall. The first group of spray holes includes at least a first spray hole and a second spray hole. The first spray hole and the second spray hole are circumferentially distributed on the top wall, and the axes of the first spray hole and the second spray hole are not perpendicular to the axis of the top wall.

10. The nozzle of the dishwasher as described in claim 9, characterized in that, The nozzle includes a second nozzle group disposed on the side wall. The second nozzle group includes at least a third nozzle and a fourth nozzle. The third nozzle and the fourth nozzle are circumferentially distributed on the side wall, and the axes of the third nozzle and the fourth nozzle do not coincide with the radial direction of the nozzle.

11. A dishwasher, characterized in that, The dishwasher includes the nozzle of the dishwasher according to any one of claims 1 to 10.

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